Improvement in liqui d-filters



C. T. HMS.`

Liquid-Filter.

No. 207,515. Patented Aug. 27,18'1'8.'l

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Acrimenes r. nai-is, or PHILADELPHIA, rniiNsvIivriNIri.-

iM PROVEM ENT LQUBSFBLTERS.

Specification iorniing part of Letters Patent No. 20%',525, dated August27, 1878, application tiled Marcil 2, 1878. I

To all whom it may concern .Be it known that I, CHARLES T. Hints, ofHiiladelphia, in the county ofA Philadelphia and State of Pennsylvania,have invented a new and useful Improvement in Liqiiid-Fi1t^rs,

Y which improvement is fully set forth in the tollowing specificationand acceInpanying` draw- 11i g. i

riihe iigure of the drawing is a side elevation, partly broken away toshow the interior.

My Invention relates to iilters 5 and it consist-s in providing;` thekfilter with a water-hack and tire-box, and a system of pipes so arrangedthat when necessary to cleanse the lter rire may be started in thelire-box and the water heated and a reverse current of hot water passed'ltis' ivell lnown that charcoal iilters must at times be cleansed by areverse current of hot water passed through the filter. Where the filtereanbe connected to an ordinary househoiler this has been easily done;but in latitudes or places where no such boilers are Vin use the iilterwould in time become so clogged by mineral matter or deposits whichcould not be removed by a reverse current of cold' proper; and withinsaid ease is a Waterback,

B, with ilre-b0x0 located below vthe filter. l) is tliepipe leading fromthe water-main',

- said pipe Ilividinginto two branches, Dl D2,

the former leading to the bottom of the filter and thel latter to thewater-back, and said branch pipes are provided with stop-cocks d1 d2,respectively.

lironi the top ot the filter extend one or more pipes, lil, withstopcocks a as outlets for the tiltered water. A

F F represent one or inorc pi pes leadiiip,` i'roni the water-back tothe top oi' the iilter, and said thrcugh the branch D1, then through thefilter,

and out through the pipes E. v

`W hen it is desired to cleanse the lter by a i reverse current of coldWater, the stopcoeks dl and a a are closed, and d2, b b, and i opened'.

The water will then enter through the pipe D2. into the water-back, passfrom thence through the pipes F F to thel top of the filter, downthrough the filter, and out throughfthe wastepipe lil. When, however, itbecomes necessary j to cleanse the `water `by a reverse eurrentof' vhotiva-ter, zre. is .builtin the rebon il.; Jil-he water takes the samecourse, but becomes heat ed while passing through the watei'-hack beforexrit reaches the filter, and will 'thus cleanse the sanieot' all mineraldeposits which are not removed by cold water. y a i.

am fully aware of the patent granted to R. S. Jennings, wherein 'areverse current or' corporated with the `filter, anda lire may he madeat any tiinewlien required for cleansing the filter.

' t is evident that the relative location of wa ter-back and lire-boxwith the filter is iinrnate rial., and may be changed according tocircnind stances without departing' from the spirit ot niy invention,the essential feature of which is the providingy a ii-lter 'with its ownmeans for supplyii'if;` hot Water without dependingl upon any outsidefixtures or eontrivances, l

Having thus described iny invention, what ll claiin as new, and desireto secure bylicttcrs Patent, 'isl 1.- A filter provided with awater-hack and a iireboic. anda system et pipes, substantially p asherein described,lor-cleansing the iilter by :L reverse current of hotWater when required, as set forth.

2. A filter provided within the sinne case yWith means for heating Waterfor cleansin g the same, substantially as herein set forth.

3. The combination of the lter A, Watterbaok B, fire-box C, withsmoke-pipe G, inletpipe D, With branches l)1 D2, outlet-pipes E E,connecting-pipes F F, and Waste-pipe H, the various pi pes beingprovided with stop-cocks,

all substantially as and for the purposes herein sei: forth. l

In testimony that IV claim the foregoing I have hereunto subscribed myname in the presence of two witnesses.

GHAS. T. HAAS.

'Witnesses GEORGE E. UPHAM, JAS. J. SHEEHY.

